import { NgModuleRef, ApplicationRef } from '@angular/core';
import { createNewHosts } from '@angularclass/hmr';

export const hmrBootstrap = (module: any, bootstrap: () => Promise<NgModuleRef<any>>) => {
	let ngModule: NgModuleRef<any>;
	module.hot.accept();
	bootstrap().then(mod => ngModule = mod);
	module.hot.dispose(() => {
		const appRef: ApplicationRef = ngModule.injector.get(ApplicationRef);
		const elements = appRef.components.map(c => c.location.nativeElement);
		const makeVisible = createNewHosts(elements);
		ngModule.destroy();
		makeVisible();
	});
};
